Monit (mail)alerts not working

[McMelloW]

Raspberry Pi 3B+ BullsEye build 1725 Monit 5.27.2

Installed and configured monit according wiki page https://www.domoticz.com/wiki/Monitoring_domoticz.

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# My mail server configuration on /etc/monit/monitrc

    set mailserver smtp.telfortglasvezel.nl port 587
    username "[email protected]" password "PASSWORD"
    using AUTO
    with timeout 30 seconds
    set alert [email protected]

When this script is active monit sends the following error

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[2024-07-03T13:15:00+0200] info     : 'mcmellow-pi' Monit 5.27.2 started
[2024-07-03T13:15:01+0200] error    : Mail: Mailserver response error -- 501 5.1.7 Bad sender address syntax
[2024-07-03T13:15:01+0200] info     : Adding event to the queue file /var/lib/monit/events/1720005301_55745a71c0 for later delivery
[2024-07-03T13:15:01+0200] error    : Mail: Mailserver response error -- 501 5.1.7 Bad sender address syntax
[2024-07-03T13:15:01+0200] error    : Alert handler failed, retry scheduled for next cycle

The configuration uses the same things as used for Domoticz sending notifications by email. That works OK.
Is there something I overlooked or is wrong?

[Kedi]

Is mail outside Domoticz, like with bash, working?
Because Domoticz has his own smtpclient for sending mail, Monit does not, it uses the system mailclient afaik.

[McMelloW]

Is mail outside Domoticz, like with bash, working?
Because Domoticz has his own smtpclient for sending mail, Monit does not, it uses the system mailclient afaik.

Which smtpclient can I use to send mail from a Raspberry Pi

[Kedi]

I use a simple email client -> msmtp

[McMelloW]

I use a simple email client -> msmtp

Thanks, I installed the same and after the first commandline test I received the following errors. Shoot me.

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echo -e "Subject: Test Mail\r\n\r\nThis is a test mail" |msmtp --debug --from=default -t  [email protected]

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<-- 501 5.1.7 Bad sender address syntax
msmtp: envelope from address default not accepted by the server
msmtp: server message: 501 5.1.7 Bad sender address syntax
msmtp: could not send mail (account default from /etc/msmtprc)

[Kedi]

So what's the content of /etc/msmtprc or (what I use) .msmtprc in the home directory.
/etc/msmtprc is the global setting in the home dir is the user setting.
Read the doc. https://marlam.de/msmtp/documentation/

B.t.w. I looked a little bit further in my system (it was a long time ago I configured monit)
It looks now to me that monit can mail internally. https://mmonit.com/monit/documentation/ ... t-delivery

[McMelloW]

B.t.w. I looked a little bit further in my system (it was a long time ago I configured monit)
It looks now to me that monit can mail internally. https://mmonit.com/monit/documentation/ ... t-delivery

That is the way it is also explained in the Domoticz wiki. See my first posting.

[Kedi]

Sorry for hasty en not good reaing of your post.
B.t.b. msmtp can help when emailing via bash...

Your error is Bad sender address syntax
I use from: $HOST@<dominename>
Fill your domain instead of the <dominename>

This my setting.

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set mail-format {
  from: $HOST@<domainname>
  subject: $SERVICE $EVENT at $DATE
  message: $EVENT Service $SERVICE
                Date:        $DATE
                Action:      $ACTION
                Host:        $HOST
                Description: $DESCRIPTION

           Your faithful employee,
           Monit }

[McMelloW]

Sorry for hasty en not good reaing of your post.
B.t.b. msmtp can help when emailing via bash...

Your error is Bad sender address syntax
I use from: $HOST@<dominename>
Fill your domain instead of the <dominename>

This my setting.

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set mail-format {
  from: $HOST@<domainname>
  subject: $SERVICE $EVENT at $DATE
  message: $EVENT Service $SERVICE
                Date:        $DATE
                Action:      $ACTION
                Host:        $HOST
                Description: $DESCRIPTION

           Your faithful employee,
           Monit }

What did you used as mailserver configuration in your monitrc

[waltervl]

Just a workaround: I use Domoticz own notify functions to notify me when Domoticz has been (re)started with the following dzvents script . https://www.domoticz.com/forum/viewtopic.php?t=25209

[Kedi]

You can't use Domoticz notification system if Domoticz is somehow not responding anymore.

My server setting is:

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set mailserver smtp.ziggo.nl port 587 username <emailname>@ziggo.nl password '<password>' using SSL with timeout 30 seconds

I have my password between single quotes.

[waltervl]

If Domoticz server is not responding it will be restarted by monit and Domoticz will send the notification.

[McMelloW]

If Domoticz server is not responding it will be restarted by monit and Domoticz will send the notification.

Thanks for your reply.
Yes, that is working OK. Domoticz does send a notification when restarted. But I do monitor others running services as well with Monit Therefor I will have the Monit mailserver up and running.

[Kedi]

@waltervl Your right. But then you get an email every time Domoticz is (re)started and there is no notification about the cause.
With Monit you can, and even monitor other processes on the same way.
That is why I use Monit, because Domoticz by default does not monitor my tmpfs /var/log and other processes that are in my case vital to Domoticz like Mosquitto and Node-Red and Zigbee2MQTT.

[waltervl]

Understood. It was just a workaround for Monit email notification for Domoticz. Currently my system is very stable so no need to know why.....

[McMelloW]

Thanks for all the input, back to my first post.

Does anybody have a hint to get sending mail from monit mail server working?

[waltervl]

https://mmonit.com/monit/documentation/ ... t-delivery
https://mmonit.com/wiki/Monit/Gmail

[jvdz]

Try something like this as it seems your sender address is wrong:

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  # My mail server configuration on /etc/monit/monitrc
set mail-format {
      from: MonitPi<[email protected]>
   subject: $SERVICE $EVENT at $DATE
   message: Monit $ACTION $SERVICE at $DATE on $HOST: $DESCRIPTION.
			Yours sincerely,
            monit
 }

set mailserver smtp.telfortglasvezel.nl port 587
username "[email protected]" password "PASSWORD"
using AUTO
with timeout 30 seconds
set alert [email protected]